div{
    font: normal 300 16px/30px '黑体';
    text-indent: 2em;
}
li {
    font: normal 300 16px/30px '黑体';
}
a{
    text-decoration: none;
}
h1 {
    text-align: center;
}
.picture {
    text-align: center;
}
.header{
    display: flex;
    justify-content: space-between;
    width: 95%;
    margin: auto;
    box-shadow: 2px 2px 2px #ccc;
}
.logo{
    letter-spacing: 2px;
    color: #333;

}
.nav ul li {
    display: inline-block;
    margin-left: 60px;
}
.footer{
    background-color: #333333;
    color: #fff;
    text-align: center;
    height: 30px;
}
.list{
    background-color: #f7e2e5;
}